摘要:
Oil-in-water nanoemulsions comprising oil globules with an average size of less than 150 nm and comprising at least one oil, at least one amphiphilc lipid, and at least one polyethylene glycol (PEG) derivative chosen from PEG esters and PEG ethers chosen from compounds of formula (I): R1—(O—CH2—CH2)n—OR2 (I) in which: R1 is chosen from linear and branched, saturated and unsaturated alkyl groups comprising from 8 to 30 carbon atoms and linear and branched, saturated and unsaturated acyl groups comprising from 8 to 30 carbon atoms, R2 is chosen from a hydrogen atom, linear and branched, saturated and unsaturated alkyl groups comprising from 1 to 30 carbon atoms, and linear and branched, saturated and unsaturated acyl groups comprising from 1 to 30 carbon atoms, and n is a number ranging from 80 to 350. Processes comprising such oil-in-water nanoemulsions.
摘要:
The present invention provides a nanoemulsion, that includes: an oily phase dispersed in an aqueous phase; and at least one glycerol fatty ester surfactant which is solid at a temperature of less than or equal to 45° C.; wherein the oily phase includes oil globules having a number-average size of less than 100 nm; wherein the oily phase includes at least one oil having a molecular weight of greater than 400; and wherein a weight ratio of the oily phase to the surfactant ranges from 2 to 10. The invention also provides a process for making the nanoemulsion and methods for its use. Ideally, the emulsion is transparent and stable on storage. It can ideally contain large amounts of oil while retaining good transparency and good cosmetic properties. The nanoemulsion is particularly useful in the cosmetics and dermatological fields, in particular for moisturizing the skin and/or mucous membranes, as well as for treating the hair, and, in the ophthalmological field, as an eye lotion for treating the eyes.
摘要:
A composition in the form of an emulsion comprising an oily phase which is dispersed, with the aid of a surfactant system, in a glycerol phase containing an oxidation-sensitive hydrophilic compound and optionally comprising at least one glycol in addition to the glycerol, characterized in that the surfactant system contains at least one surfactant capable of forming a lamellar phase on contact with the glycerol phase and having a melting point of greater than or equal to 35° C. The composition obtained has the appearance of a gel in which the hydrophilic compound is stabilized with respect to oxidation, this stabilization also being achieved under aerobic conditions. The invention also relates to the use of the said composition in order to tone the skin and/or to smooth out wrinkles and fine lines on the skin and/or to combat the harmful effects of UV radiation and pollution and/or to depigment the skin.
摘要:
The invention relates to a composition, in particular a cosmetic or dermatological composition, having an aqueous dispersion of vesicles with a lipid membrane, characterized in that the lipid membrane contains at least one carbamate of following formula (I): ##STR1## wherein R.sub.1 and R.sub.2 are defined in the specification.
摘要:
The invention relates to a process for stabilization of vesicles formed from a lipid-phase membrane containing at least one ionic and/or nonionic amphiphilic lipid encapsulating an aqueous phase, in the form of a dispersion in an aqueous phase, by addition of at least one stabilizing agent to the aqueous dispersion phase, in which the stabilizing agent (s) is/are chosen from the group composed of glycerol alginates, propylene glycol alginates, gellan gum and wellan gum. The invention also relates to a composition for topical application containing vesicles stabilized by the said process.
摘要:
A dispersion of a water-immiscible phase, in an external aqueous phase by means of lipid vesicles comprising at least one silicone surfactant, for the treatment of the skin, the mucous membranes, the nails, the scalp and the hair and in particular, greasy skin.
摘要:
An oil-in-water emulsion with oil globules with a mean size of no greater than 150 nm, comprising an amphiphilic lipid phase comprising at least one nonionic amphiphilic lipid which is liquid at an ambient temperature of less than 45.degree. C., at least one oil and at least one aminated silicone, as well as to its uses in the cosmetic or dermopharmaceutical field.
摘要:
The vesicles are prepared from a lipid phase containing a mixture of nonionic amphiphilic lipids consisting of a mixture of esters of at least one polyol chosen from the group composed of polyethylene glycol containing from 1 to 60 ethylene oxide units, sorbitan, sorbitan bearing 2 to 60 ethylene oxide units, glycerol bearing 2 to 30 ethylene oxide units, polyglycerols containing 2 to 15 glycerol units, sucroses, and glucoses bearing 2 to 30 ethylene oxide units and of at least one fatty acid containing a saturated or unsaturated, linear or branched C.sub.5 -C.sub.17 alkyl chain, the number of alkyl chains per polyol group being between 1 and 10, the mixture being stabilized with ionic amphiphilic lipid or lipids chosen from the group composed of those which impart a pH of between 5.5 and 7.5 to the dispersion.
摘要:
Compositions comprising a first dispersion of lipid vesicles which are capable of penetrating into the deep layers of the skin and which contain at least one active agent chosen from moisturizing agents, anti-free-radical agents, keratolytic agents, protides, enzymes, anti-elastase agents and anti-collagenase agents, and fatty acid derivatives, for treating these deep layers, and a second dispersion of lipid vesicles which are capable of penetrating into the surface layers of the skin and which contain at least one active agent chosen from keratolytic agents, tensioning agents, moisturizing agents, surface-restructuring agents and anti-free-radical agents, for treating these surface layers, are effective for combating ageing, acting simultaneously on the surface layers and deep layers of the skin.
摘要:
A composition comprising a first dispersion of lipid vesicles capable of entering the deep layers of the skin and containing at least one first active substance capable of treating these deep layers, and a second dispersion of lipid vesicles capable of entering the surface layers of the skin and containing at least one second active substance, different from the first active substance, capable of treating these surface layers is found effective for anti-age, anti-wrinkle, depigmenting, nutrient, slimming, hydrating, anti-ache, antimycotic, anti-dermic and anti-psoriatic treatment.